Justin Bieber: Instagram is used to check out pretty girls

New York: Pop sensation Justin Bieber thinks Instagram is mainly used by guys who want to look at pretty girls.

The "What Do You Mean?" singer is a huge fan of the photo-sharing website but believes it is used primarily for men to check out attractive women.

Justin Bieber. Pic/Santa Banta

"Instagram is about dudes looking at pretty girls, that's basically it. I'm just saying that, of course girls like looking at dudes, but it's not the same as how much dudes like looking at chicks," Bieber told Mo' Bounce from New York's Z100 radio station.

Despite his global fame, the 21-year-old superstar insists he doesn't let being recognised wherever he goes 'rule his life'.

Asked if it can be difficult for him to go out, he said: "I don't want to let that rule my life."